diff --git a/build/vc100/turtle.vcxproj b/build/vc100/turtle.vcxproj
index af9800c..0d0fc7b 100644
--- a/build/vc100/turtle.vcxproj
+++ b/build/vc100/turtle.vcxproj
@@ -19,34 +19,34 @@
     </ProjectConfiguration>
   </ItemGroup>
   <ItemGroup>
-    <ClInclude Include="..\..\..\..\turtle\action.hpp" />
-    <ClInclude Include="..\..\..\..\turtle\args.hpp" />
-    <ClInclude Include="..\..\..\..\turtle\boost_test_error.hpp" />
-    <ClInclude Include="..\..\..\..\turtle\check.hpp" />
-    <ClInclude Include="..\..\..\..\turtle\child.hpp" />
-    <ClInclude Include="..\..\..\..\turtle\cleanup.hpp" />
-    <ClInclude Include="..\..\..\..\turtle\config.hpp" />
-    <ClInclude Include="..\..\..\..\turtle\constraint.hpp" />
-    <ClInclude Include="..\..\..\..\turtle\constraints.hpp" />
-    <ClInclude Include="..\..\..\..\turtle\context.hpp" />
-    <ClInclude Include="..\..\..\..\turtle\default_error.hpp" />
-    <ClInclude Include="..\..\..\..\turtle\error.hpp" />
-    <ClInclude Include="..\..\..\..\turtle\expectation.hpp" />
-    <ClInclude Include="..\..\..\..\turtle\function.hpp" />
-    <ClInclude Include="..\..\..\..\turtle\group.hpp" />
-    <ClInclude Include="..\..\..\..\turtle\invocation.hpp" />
-    <ClInclude Include="..\..\..\..\turtle\is_functor.hpp" />
-    <ClInclude Include="..\..\..\..\turtle\lambda.hpp" />
-    <ClInclude Include="..\..\..\..\turtle\log.hpp" />
-    <ClInclude Include="..\..\..\..\turtle\mock.hpp" />
-    <ClInclude Include="..\..\..\..\turtle\object.hpp" />
-    <ClInclude Include="..\..\..\..\turtle\operators.hpp" />
-    <ClInclude Include="..\..\..\..\turtle\parent.hpp" />
-    <ClInclude Include="..\..\..\..\turtle\root.hpp" />
-    <ClInclude Include="..\..\..\..\turtle\sequence.hpp" />
-    <ClInclude Include="..\..\..\..\turtle\type_name.hpp" />
-    <ClInclude Include="..\..\..\..\turtle\verifiable.hpp" />
-    <ClInclude Include="..\..\..\..\turtle\yes_no_type.hpp" />
+    <ClInclude Include="..\..\turtle\action.hpp" />
+    <ClInclude Include="..\..\turtle\args.hpp" />
+    <ClInclude Include="..\..\turtle\boost_test_error.hpp" />
+    <ClInclude Include="..\..\turtle\check.hpp" />
+    <ClInclude Include="..\..\turtle\child.hpp" />
+    <ClInclude Include="..\..\turtle\cleanup.hpp" />
+    <ClInclude Include="..\..\turtle\config.hpp" />
+    <ClInclude Include="..\..\turtle\constraint.hpp" />
+    <ClInclude Include="..\..\turtle\constraints.hpp" />
+    <ClInclude Include="..\..\turtle\context.hpp" />
+    <ClInclude Include="..\..\turtle\default_error.hpp" />
+    <ClInclude Include="..\..\turtle\error.hpp" />
+    <ClInclude Include="..\..\turtle\expectation.hpp" />
+    <ClInclude Include="..\..\turtle\function.hpp" />
+    <ClInclude Include="..\..\turtle\group.hpp" />
+    <ClInclude Include="..\..\turtle\invocation.hpp" />
+    <ClInclude Include="..\..\turtle\is_functor.hpp" />
+    <ClInclude Include="..\..\turtle\lambda.hpp" />
+    <ClInclude Include="..\..\turtle\log.hpp" />
+    <ClInclude Include="..\..\turtle\mock.hpp" />
+    <ClInclude Include="..\..\turtle\object.hpp" />
+    <ClInclude Include="..\..\turtle\operators.hpp" />
+    <ClInclude Include="..\..\turtle\parent.hpp" />
+    <ClInclude Include="..\..\turtle\root.hpp" />
+    <ClInclude Include="..\..\turtle\sequence.hpp" />
+    <ClInclude Include="..\..\turtle\type_name.hpp" />
+    <ClInclude Include="..\..\turtle\verifiable.hpp" />
+    <ClInclude Include="..\..\turtle\yes_no_type.hpp" />
   </ItemGroup>
   <PropertyGroup Label="Globals">
     <ProjectGuid>{831F2DEE-1E35-4533-A3B2-12C01BA8DA1D}</ProjectGuid>
diff --git a/build/vc100/turtle.vcxproj.filters b/build/vc100/turtle.vcxproj.filters
index bae2c05..070304a 100644
--- a/build/vc100/turtle.vcxproj.filters
+++ b/build/vc100/turtle.vcxproj.filters
@@ -7,88 +7,88 @@
     </Filter>
   </ItemGroup>
   <ItemGroup>
-    <ClInclude Include="..\..\..\..\turtle\action.hpp">
+    <ClInclude Include="..\..\turtle\config.hpp">
       <Filter>Source Files</Filter>
     </ClInclude>
-    <ClInclude Include="..\..\..\..\turtle\args.hpp">
+    <ClInclude Include="..\..\turtle\constraint.hpp">
       <Filter>Source Files</Filter>
     </ClInclude>
-    <ClInclude Include="..\..\..\..\turtle\boost_test_error.hpp">
+    <ClInclude Include="..\..\turtle\constraints.hpp">
       <Filter>Source Files</Filter>
     </ClInclude>
-    <ClInclude Include="..\..\..\..\turtle\check.hpp">
+    <ClInclude Include="..\..\turtle\context.hpp">
       <Filter>Source Files</Filter>
     </ClInclude>
-    <ClInclude Include="..\..\..\..\turtle\child.hpp">
+    <ClInclude Include="..\..\turtle\default_error.hpp">
       <Filter>Source Files</Filter>
     </ClInclude>
-    <ClInclude Include="..\..\..\..\turtle\cleanup.hpp">
+    <ClInclude Include="..\..\turtle\error.hpp">
       <Filter>Source Files</Filter>
     </ClInclude>
-    <ClInclude Include="..\..\..\..\turtle\config.hpp">
+    <ClInclude Include="..\..\turtle\expectation.hpp">
       <Filter>Source Files</Filter>
     </ClInclude>
-    <ClInclude Include="..\..\..\..\turtle\constraint.hpp">
+    <ClInclude Include="..\..\turtle\function.hpp">
       <Filter>Source Files</Filter>
     </ClInclude>
-    <ClInclude Include="..\..\..\..\turtle\constraints.hpp">
+    <ClInclude Include="..\..\turtle\group.hpp">
       <Filter>Source Files</Filter>
     </ClInclude>
-    <ClInclude Include="..\..\..\..\turtle\context.hpp">
+    <ClInclude Include="..\..\turtle\invocation.hpp">
       <Filter>Source Files</Filter>
     </ClInclude>
-    <ClInclude Include="..\..\..\..\turtle\default_error.hpp">
+    <ClInclude Include="..\..\turtle\is_functor.hpp">
       <Filter>Source Files</Filter>
     </ClInclude>
-    <ClInclude Include="..\..\..\..\turtle\error.hpp">
+    <ClInclude Include="..\..\turtle\lambda.hpp">
       <Filter>Source Files</Filter>
     </ClInclude>
-    <ClInclude Include="..\..\..\..\turtle\expectation.hpp">
+    <ClInclude Include="..\..\turtle\log.hpp">
       <Filter>Source Files</Filter>
     </ClInclude>
-    <ClInclude Include="..\..\..\..\turtle\function.hpp">
+    <ClInclude Include="..\..\turtle\mock.hpp">
       <Filter>Source Files</Filter>
     </ClInclude>
-    <ClInclude Include="..\..\..\..\turtle\group.hpp">
+    <ClInclude Include="..\..\turtle\object.hpp">
       <Filter>Source Files</Filter>
     </ClInclude>
-    <ClInclude Include="..\..\..\..\turtle\invocation.hpp">
+    <ClInclude Include="..\..\turtle\operators.hpp">
       <Filter>Source Files</Filter>
     </ClInclude>
-    <ClInclude Include="..\..\..\..\turtle\is_functor.hpp">
+    <ClInclude Include="..\..\turtle\parent.hpp">
       <Filter>Source Files</Filter>
     </ClInclude>
-    <ClInclude Include="..\..\..\..\turtle\lambda.hpp">
+    <ClInclude Include="..\..\turtle\root.hpp">
       <Filter>Source Files</Filter>
     </ClInclude>
-    <ClInclude Include="..\..\..\..\turtle\log.hpp">
+    <ClInclude Include="..\..\turtle\sequence.hpp">
       <Filter>Source Files</Filter>
     </ClInclude>
-    <ClInclude Include="..\..\..\..\turtle\mock.hpp">
+    <ClInclude Include="..\..\turtle\type_name.hpp">
       <Filter>Source Files</Filter>
     </ClInclude>
-    <ClInclude Include="..\..\..\..\turtle\object.hpp">
+    <ClInclude Include="..\..\turtle\verifiable.hpp">
       <Filter>Source Files</Filter>
     </ClInclude>
-    <ClInclude Include="..\..\..\..\turtle\operators.hpp">
+    <ClInclude Include="..\..\turtle\yes_no_type.hpp">
       <Filter>Source Files</Filter>
     </ClInclude>
-    <ClInclude Include="..\..\..\..\turtle\parent.hpp">
+    <ClInclude Include="..\..\turtle\action.hpp">
       <Filter>Source Files</Filter>
     </ClInclude>
-    <ClInclude Include="..\..\..\..\turtle\root.hpp">
+    <ClInclude Include="..\..\turtle\args.hpp">
       <Filter>Source Files</Filter>
     </ClInclude>
-    <ClInclude Include="..\..\..\..\turtle\sequence.hpp">
+    <ClInclude Include="..\..\turtle\boost_test_error.hpp">
       <Filter>Source Files</Filter>
     </ClInclude>
-    <ClInclude Include="..\..\..\..\turtle\type_name.hpp">
+    <ClInclude Include="..\..\turtle\check.hpp">
       <Filter>Source Files</Filter>
     </ClInclude>
-    <ClInclude Include="..\..\..\..\turtle\verifiable.hpp">
+    <ClInclude Include="..\..\turtle\child.hpp">
       <Filter>Source Files</Filter>
     </ClInclude>
-    <ClInclude Include="..\..\..\..\turtle\yes_no_type.hpp">
+    <ClInclude Include="..\..\turtle\cleanup.hpp">
       <Filter>Source Files</Filter>
     </ClInclude>
   </ItemGroup>
diff --git a/build/vc80/turtle.vcproj b/build/vc80/turtle.vcproj
index b52b29b..336d337 100644
--- a/build/vc80/turtle.vcproj
+++ b/build/vc80/turtle.vcproj
@@ -4,6 +4,7 @@
 	Version="8,00"
 	Name="turtle"
 	ProjectGUID="{831F2DEE-1E35-4533-A3B2-12C01BA8DA1D}"
+	RootNamespace="turtle"
 	>
 	<Platforms>
 		<Platform
@@ -153,115 +154,115 @@
 			UniqueIdentifier="{4FC737F1-C7A5-4376-A066-2A32D752A2FF}"
 			>
 			<File
-				RelativePath="..\..\..\..\turtle\action.hpp"
+				RelativePath="..\..\turtle\action.hpp"
 				>
 			</File>
 			<File
-				RelativePath="..\..\..\..\turtle\args.hpp"
+				RelativePath="..\..\turtle\args.hpp"
 				>
 			</File>
 			<File
-				RelativePath="..\..\..\..\turtle\boost_test_error.hpp"
+				RelativePath="..\..\turtle\boost_test_error.hpp"
 				>
 			</File>
 			<File
-				RelativePath="..\..\..\..\turtle\check.hpp"
+				RelativePath="..\..\turtle\check.hpp"
 				>
 			</File>
 			<File
-				RelativePath="..\..\..\..\turtle\child.hpp"
+				RelativePath="..\..\turtle\child.hpp"
 				>
 			</File>
 			<File
-				RelativePath="..\..\..\..\turtle\cleanup.hpp"
+				RelativePath="..\..\turtle\cleanup.hpp"
 				>
 			</File>
 			<File
-				RelativePath="..\..\..\..\turtle\config.hpp"
+				RelativePath="..\..\turtle\config.hpp"
 				>
 			</File>
 			<File
-				RelativePath="..\..\..\..\turtle\constraint.hpp"
+				RelativePath="..\..\turtle\constraint.hpp"
 				>
 			</File>
 			<File
-				RelativePath="..\..\..\..\turtle\constraints.hpp"
+				RelativePath="..\..\turtle\constraints.hpp"
 				>
 			</File>
 			<File
-				RelativePath="..\..\..\..\turtle\context.hpp"
+				RelativePath="..\..\turtle\context.hpp"
 				>
 			</File>
 			<File
-				RelativePath="..\..\..\..\turtle\default_error.hpp"
+				RelativePath="..\..\turtle\default_error.hpp"
 				>
 			</File>
 			<File
-				RelativePath="..\..\..\..\turtle\error.hpp"
+				RelativePath="..\..\turtle\error.hpp"
 				>
 			</File>
 			<File
-				RelativePath="..\..\..\..\turtle\expectation.hpp"
+				RelativePath="..\..\turtle\expectation.hpp"
 				>
 			</File>
 			<File
-				RelativePath="..\..\..\..\turtle\function.hpp"
+				RelativePath="..\..\turtle\function.hpp"
 				>
 			</File>
 			<File
-				RelativePath="..\..\..\..\turtle\group.hpp"
+				RelativePath="..\..\turtle\group.hpp"
 				>
 			</File>
 			<File
-				RelativePath="..\..\..\..\turtle\invocation.hpp"
+				RelativePath="..\..\turtle\invocation.hpp"
 				>
 			</File>
 			<File
-				RelativePath="..\..\..\..\turtle\is_functor.hpp"
+				RelativePath="..\..\turtle\is_functor.hpp"
 				>
 			</File>
 			<File
-				RelativePath="..\..\..\..\turtle\lambda.hpp"
+				RelativePath="..\..\turtle\lambda.hpp"
 				>
 			</File>
 			<File
-				RelativePath="..\..\..\..\turtle\log.hpp"
+				RelativePath="..\..\turtle\log.hpp"
 				>
 			</File>
 			<File
-				RelativePath="..\..\..\..\turtle\mock.hpp"
+				RelativePath="..\..\turtle\mock.hpp"
 				>
 			</File>
 			<File
-				RelativePath="..\..\..\..\turtle\object.hpp"
+				RelativePath="..\..\turtle\object.hpp"
 				>
 			</File>
 			<File
-				RelativePath="..\..\..\..\turtle\operators.hpp"
+				RelativePath="..\..\turtle\operators.hpp"
 				>
 			</File>
 			<File
-				RelativePath="..\..\..\..\turtle\parent.hpp"
+				RelativePath="..\..\turtle\parent.hpp"
 				>
 			</File>
 			<File
-				RelativePath="..\..\..\..\turtle\root.hpp"
+				RelativePath="..\..\turtle\root.hpp"
 				>
 			</File>
 			<File
-				RelativePath="..\..\..\..\turtle\sequence.hpp"
+				RelativePath="..\..\turtle\sequence.hpp"
 				>
 			</File>
 			<File
-				RelativePath="..\..\..\..\turtle\type_name.hpp"
+				RelativePath="..\..\turtle\type_name.hpp"
 				>
 			</File>
 			<File
-				RelativePath="..\..\..\..\turtle\verifiable.hpp"
+				RelativePath="..\..\turtle\verifiable.hpp"
 				>
 			</File>
 			<File
-				RelativePath="..\..\..\..\turtle\yes_no_type.hpp"
+				RelativePath="..\..\turtle\yes_no_type.hpp"
 				>
 			</File>
 		</Filter>